Citation: Becoming separated from their platoon by a smoke
barrage, Cpl. O'Shea, with 2 other soldiers, took cover in a shell hole
well within the enemy's lines. Upon hearing a call for help from an American
tank, which had become disabled 30 yards from them, the 3 soldiers left
their shelter and started toward the tank under heavy fire from German
machineguns and trench mortars. In crossing the fire-swept area Cpl. O'Shea
was mortally wounded and died of his wounds shortly afterwards.

This data was extracted from the Committee on Veterans' Affairs, U.S. Senate, Medal of Honor Recipients: 1863-1973 (Washington, D.C.: Government Printing Office, 1973)